ARS Technica: For most of last year, it looked like Chrome was steadily catching up with Firefox and likely to overtake it in the first couple months of this year. But that hasn't happened; for a third straight month, Chrome has slightly declined, and Firefox has ever so slightly gained.

What I personally feel is that the only reason why Firefox is up is the new update which was released last month. IE was up when version 9 was initially released but people now a days are getting familiar with Google Chrome. Even I thought that Chrome must be leading since Chrome 17.0 has really impressed me a lot.